'03 Toyota Matrix XRS 6 speed. Supercar?...to me it is. It's not much compared to some, but it's what I've got. Same Toyota 2ZZ-GE motor as Lotus Elise, same as base motor for Lotus Exige. Major mods:

~1" drop on TRD springs
TRD STB
TRD axle back exhaust
Progress 22mm RSB
K&N Typhoon SRI
17 x 8 BBS RD wheels
245/45/17 Falken ZE-912 tires

Couple of pics:

 

Not bad, not a supercar by any means, but it's what ya got. Drove one of these as a rental, they're pretty spacious inside

 

sick car big guy. i'd put a light tint on the head lights and tail lights and black out all of the emblems. i think it would really stand out without going to far

 

Hey you are on the right track....might I suggest getting some grill inserts and maybe going with a flashy set of rims. Those look almost stock. Wonder if rims from another toyota would fit?